Tay, I have a F350 and just got through dealing with similar issues. The white smoke is typically caused by a bad gpr or gp's. I'm assuming that you don't have the white smoke issue once it gets warm.

It may be different with the LMM but I thought I would mention this since a gpr and/or gp's are a lot cheaper than injector(s).

Do you have a block heater? Can you plug it in overnight and see if you still get the white smoke?

I'm going to install a lift pump on it here in the next few weeks. Once I do that I will check the fuel pressure regulator. I also go the fuel rail shim thats supposed to help it out as well. Once its warm, it stops, only when its cold and has been setting more than a few days.

Sick of tenants growing dope in our rental house. Time for a change of pace. Had the excavator come in and demolish, dig the hole and a D7 pushed it into the hole for me. Problem solved! The house was past repair. White ants,cracks in the walls, needed reroofing etc.

It lets you have 5 tunes with efi live, it's switchable while driving. Like this truck will be set up with these tunes; #1 stock, #2 tow with turbo brake, #3 performance, #4 race, #5 smoke. But the tunes can be moved to different #s or they can be altered for performance etc